Polishing frets and other fret work gets a whole lot easier with Music Nomad's GRIP Guards. These premium fretboard guards are made using a high-precision process that produces a smooth finish on high-quality stainless steel material that is non-magnetic, corrosion resistant and heat resistant. The specially engineered curved angle contours to all fretboards. An innovative ergonomic handle makes any fret job easier, quicker and keeps your fingers from getting in the way. The set of three GRIP guards works on all string instruments and includes small, medium and jumbo fret slot sizes. The ideal width lets you work up and down any fretboard whether it's attached to a guitar, bass or even a ukulele.